<template>
  <div>
    <nav-bar>
      <div slot="left" class="back" @click="backClick">
        <img src="~assets/img/common/back.svg" alt="">
      </div>
      <div slot="center" class="title">
        <div v-for="(item, index) in titles"
             class="title_item"
             :class="{active:index === currentIndex}" @click="titleClick(index)">
          {{ item }}
        </div>
      </div>
    </nav-bar>
  </div>
</template>

<script>
import NavBar from "@/components/common/navbar/NavBar";

export default {
  name: "DetailNavBar",
  components: {
    NavBar,
  },
  data() {
    return {
      titles: ['商品', '参数', '评论', '推荐'],
      currentIndex: 0
    }
  },
  methods: {
    titleClick(index) {
      this.currentIndex = index;
      this.$emit('titleClick',index);
    },
    backClick() {
      this.$router.back();
      // this.$router.go(-1);
    }
  }
}
</script>

<style scoped>
.title {
  display: flex;
  font-size: 14px;
}

.title_item {
  flex: 1;
}

.active {
  color: var(--color-tint);
}

.back img{
  margin-top: 12px;
}
</style>
